- the edge of an airfoil or propeller blade facing the direction of motion.
- something that is or represents the most advanced or innovative aspect of a field, activity, profession, etc.; forefront; vanguard: the leading edge of technology.
- the forward edge of a propeller blade, aerofoil, or wing
- the part of a pulse signal that has an increasing amplitude
- the leading position in any field
- (as modifier)
